The Time Chronicles - Time Chronicles

Three complete young adult novelsTime and Again: When Petra Baron entered the fortuneteller's tent at her school's Renaissance fair, she expected to come out with a date to the prom. Instead, Petra got the shock of her life when she walked out into Elizabethan England. Here, she meets a demon dog, a couple of gypsies, and a kindred spirit named Emory Ravenswood. Timeless:Petra Baron and her immortal boyfriend, Emory, are living their happily-ever-after in modern-day California, until he shows up: Dane, AKA the heart-stoppingly handsome man from Petra's past.
Petra can't remember Dane (or anything else about her time in New York two hundred years ago), but Emory sure can. In fact, he knows she's lucky to have forgotten all about Dane and the nightmarish episode in 1810. Time After Time:After barely escaping Sleepy Hollow with their lives, Petra Baron and her immortal boyfriend, Emory Ravenswood, find themselves thrust into the bustle of modern-day New York, where the dangers - although no longer Headless nor Horsemen - are both living and dead.